class CreateDingdan2shangpins < ActiveRecord::Migration
  def self.up
    create_table :dingdan2shangpins do |t|
      t.integer :dingdan_id
      t.integer :shangpin_id
      t.integer :shuliang

      t.timestamps
    end
  end

  def self.down
    drop_table :dingdan2shangpins
  end
end
